/*
* Process one tablespace directory for ResetUnloggedRelations
*/
static void
ResetUnloggedRelationsInTablespaceDir(const char *tsdirname, int op)
{
DIR *ts_dir;
struct dirent *de;
char dbspace_path[MAXPGPATH * 2];
ts_dir = AllocateDir(tsdirname);
/*
* If we get ENOENT on a tablespace directory, log it and return. This
* can happen if a previous DROP TABLESPACE crashed between removing the
* tablespace directory and removing the symlink in pg_tblspc. We don't
* really want to prevent database startup in that scenario, so let it
* pass instead. Any other type of error will be reported by ReadDir
* (causing a startup failure).
*/
if (ts_dir == NULL && errno == ENOENT)
{
ereport(LOG,
(errcode_for_file_access(),
errmsg("could not open directory \"%s\": %m",
tsdirname)));
return;
}
while ((de = ReadDir(ts_dir, tsdirname)) != NULL)
{
/*
* We're only interested in the per-database directories, which have
* numeric names. Note that this code will also (properly) ignore "."
* and "..".
*/
if (strspn(de->d_name, "0123456789") != strlen(de->d_name))
continue;
snprintf(dbspace_path, sizeof(dbspace_path), "%s/%s",
tsdirname, de->d_name);
ResetUnloggedRelationsInDbspaceDir(dbspace_path, op);
}
FreeDir(ts_dir);
}
/* Process one tablespace directory for ResetUnloggedRelations */
static void
ResetUnloggedRelationsInTablespaceDir(const char *tsdirname, int op)
{
DIR *ts_dir;
struct dirent *de;
char dbspace_path[MAXPGPATH];
ts_dir = AllocateDir(tsdirname);
if (ts_dir == NULL)
{
/* anything except ENOENT is fishy */
if (errno != ENOENT)
elog(LOG,
"could not open tablespace directory \"%s\": %m",
tsdirname);
return;
}
while ((de = ReadDir(ts_dir, tsdirname)) != NULL)
{
int i = 0;
/*
* We're only interested in the per-database directories, which have
* numeric names. Note that this code will also (properly) ignore "."
* and "..".
*/
while (isdigit((unsigned char) de->d_name[i]))
++i;
if (de->d_name[i] != '\0' || i == 0)
continue;
snprintf(dbspace_path, sizeof(dbspace_path), "%s/%s",
tsdirname, de->d_name);
ResetUnloggedRelationsInDbspaceDir(dbspace_path, op);
}
FreeDir(ts_dir);
}
